AM6546: single mode operation QSPI interface

Chetan Kumar2

Prodigy 220 points

Part Number: AM6546

Hi,

I need to configure OSPI1 interface in am6546 to operate in single mode.

1.What changes need to be done in dts.

2. How processor detects ospi interface is working in ospi or qspi?

Regards,

N Chetan Kumar

over 5 years ago

0 Keerthy J over 5 years ago

TI__Guru**** 163170 points

Hi Chetan,

Are you connecting a flash device or a non-flash device with OSPI1?

Regards,
Keerthy

0 Chetan Kumar2 over 4 years ago in reply to Keerthy J

Prodigy 220 points

Hi Keerthy,

We are using FRAM having part no: CY15V104QSN-108SXI

datasheet:

schematic:

Regards,

N Chetan Kumar

0 Keerthy J over 4 years ago in reply to Chetan Kumar2

TI__Guru**** 163170 points

Hi Chetan,

I have reached out to our SPI experts. I will get back once i hear from them.

Best Regards,
Keerthy

0 Keerthy J over 4 years ago in reply to Keerthy J

TI__Guru**** 163170 points

Hi Chetan,

CQSPI controller driver should support it out of the box. You would need
to set spi-rx-bus-width and spi-tx-bus-width to 1 in DTS to force it to use 1S-1S-1S mode.

Linux v5.8 and above support cy15b104q and cy15v104q. So
CY15V104QSN-108SXI should be supported in v5.8 and above with
spi-rx-bus-width and spi-tx-bus-width updated to 1. The read-delay
might also need to be changed but its value can’t be determined until
the flash installed and tested on the board.

Code changes:

The Above commit adds support to your FRAM part. That needs to be backported to your kernel.

Best Regards,
Keerthy

Processors

Processors forum

AM6546: single mode operation QSPI interface